#BB1F17
Closest named color: Scarlet (#BE0119). oklch(51.1% 0.191 29), rgb(187, 31, 23).
Aa
White text reads best on this color (6.32:1).
About this color
#BB1F17 is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.191 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Scarlet (#BE0119), ΔE 0.018 away. White text reads best on it, at 6.32:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.191) |
| Temperature | warm |
| Nearest name | Scarlet (#BE0119) |
| Black text | 3.32:1 |
| White text | 6.32:1 |
Values
| HEX | #BB1F17 |
| RGB | rgb(187, 31, 23) |
| HSL | hsl(3, 78%, 41%) |
| OKLCH | oklch(51.1% 0.191 29) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #BB1F17 | 6.32:1 | AA | Lc -84.8 | Fine for body text |
| Black text on #BB1F17 | 3.32:1 | AA large text | Lc 24.4 | Dividers and decoration only |
| #BB1F17 text on white | 6.32:1 | AA | Lc 79.6 | Fine for body text |
| #BB1F17 text on black | 3.32:1 | AA large text | Lc -22.2 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 700.
-
Step 50
50
#FEF3F1
oklch(97.2% 0.012 29.9)
-
Step 100
100
#FBE4E0
oklch(93.6% 0.026 29.4)
-
Step 200
200
#F9CDC6
oklch(88.4% 0.051 28.7)
-
Step 300
300
#F7AA9E
oklch(80.9% 0.093 29.1)
-
Step 400
400
#EE7969
oklch(70.7% 0.147 29.3)
-
Step 500
500
#E54F40
oklch(63.1% 0.189 29.1)
-
Step 600
600
#D1271D
oklch(55.7% 0.206 29.1)
-
Step 700
700 (this color)
#BB1F17
oklch(51.1% 0.191 29)
-
Step 800
800
#921711
oklch(42.6% 0.158 28.9)
-
Step 900
900
#751D16
oklch(37.6% 0.123 28.9)
-
Step 950
950
#45130E
oklch(26.9% 0.078 28.9)
#BB1F17 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #544A13 | 0.207 |
| Deuteranopia (no green cones) | #796C0A | 0.188 |
| Tritanopia (no blue cones) | #CF0020 | 0.041 |
| Achromatopsia (no color) | #606060 | 0.192 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BB1F17
#BB1F17
oklch(51.1% 0.191 29)
- #007481
#007481
oklch(51.1% 0.088 208.4)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #BB1F17, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Scarlet #BE0119 ΔE 0.018
- Firebrick #B22222 ΔE 0.019
- Rufous #AE2012 ΔE 0.027
- Rusty Red #AF2F0D ΔE 0.029
- Lipstick Red #C0022F ΔE 0.032
- Rust Red #AA2704 ΔE 0.036
- Brown #A52A2A ΔE 0.045
- Rose Red #BE013C ΔE 0.047
Use #BB1F17 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.